Skip to content
Health Library
 

Thawing Breast Milk

 

General guidelines for thawing frozen breast milk:

The following are general guidelines for thawing frozen breast milk:

  • The oldest milk should be used first, unless recently expressed milk is recommended.
  • Thaw breast milk by placing the collection container in the refrigerator for several hours or overnight.
To thaw more quickly or to heat refrigerated milk, hold the container of milk under warm running water or place it in a cup, pot, bowl, or basin of warm water. Do not thaw breast milk at room temperature, in very hot water, or in the microwave. Microwaving can create hot spots, plus this method of heating or heating in very hot water may decrease the amount of certain anti-infective properties in the milk.

Your milk separates during storage and the cream (fat) rises to the top, because breast milk is not homogenized. Gently swirl, or rotate, the collection bottle of milk to mix it together. Avoid vigorous shaking.

Do not refreeze milk once it has been thawed. Thawed milk must be used within 24 hours.


 

The information on this Web page is provided for educational purposes. You understand and agree that this information is not intended to be, and should not be used as, a substitute for medical treatment by a health care professional. You agree that Lucile Salter Packard Children's Hospital is not making a diagnosis of your condition or a recommendation about the course of treatment for your particular circumstances through the use of this Web page. You agree to be solely responsible for your use of this Web page and the information contained on this page. Lucile Salter Packard Children's Hospital, its officers, directors, employees, agents, and information providers shall not be liable for any damages you may suffer or cause through your use of this page even if advised of the possibility of such damages.